Perception visual - direct reflexion of the objective validity by means of organs of vision.

Hygiene - the doctrine about health preservation, living conditions and works and the measures warning disease. Here - use by the designer of the hygienic labour specifications promoting creation of favorable working conditions and rest of the person.

the Schedule colour - a graphic representation on a plane of set of co-ordinates of chromaticity.

Design (English design - the project, drawing, a plan, a design) - is art-design activity in the industry. Design it is not simple designing, and the witty project, the original, unusual offer, a certain plan of action.